EP0636960A1 - Thermostatventil - Google Patents

Thermostatventil Download PDF

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Publication number
EP0636960A1
EP0636960A1 EP94401609A EP94401609A EP0636960A1 EP 0636960 A1 EP0636960 A1 EP 0636960A1 EP 94401609 A EP94401609 A EP 94401609A EP 94401609 A EP94401609 A EP 94401609A EP 0636960 A1 EP0636960 A1 EP 0636960A1
Authority
EP
European Patent Office
Prior art keywords
valve
pusher
thermostatic
thermostatic element
socket
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94401609A
Other languages
English (en)
French (fr)
Other versions
EP0636960B1 (de
Inventor
Jacky Leger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Comap SA
Original Assignee
Comap SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Comap SA filed Critical Comap SA
Publication of EP0636960A1 publication Critical patent/EP0636960A1/de
Application granted granted Critical
Publication of EP0636960B1 publication Critical patent/EP0636960B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/01—Control of temperature without auxiliary power
    • G05D23/02—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature
    • G05D23/021—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being a non-metallic solid, e.g. elastomer, paste
    • G05D23/023—Control of temperature without auxiliary power with sensing element expanding and contracting in response to changes of temperature the sensing element being a non-metallic solid, e.g. elastomer, paste the sensing element being placed outside a regulating fluid flow

Definitions

  • the invention relates to thermostatic valves, intended to ensure the automatic maintenance of the temperature by acting on a flow of fluid, in particular in heating installations.
  • thermostatic valves consist of two elements, assembled by the installer when he performs the heating installation, that is to say on site, respectively ensuring the two functions set out above.
  • These two elements are a valve body, comprising the mechanism for adjusting the flow rate and topped with a protective windscreen which can act as an operating button for use as a conventional valve, intended to be removed during assembly of the body. with a thermostatic head, and the thermostatic head ensuring the maintenance of the temperature by acting on this same flow adjustment mechanism.
  • Thermostatic valves are known in particular, the body of which comprises a circular seat having a central axis perpendicular to the longitudinal axis of the pipes between which the valve is intended to be inserted, seat adapted to be selectively closed by a valve in order to isolate or to connect an inlet chamber and an outlet chamber, this valve belonging to a mobile assembly mounted to slide longitudinally along the central axis of the seat inside a guide and return device screwed into the body.
  • the movable element of this body consists, outside the valve, of a valve stem, one end of which is fixed in the valve with the interposition of a stiffening washer embedded in this valve, and of a control needle, one end is fixed in the end of the valve stem opposite to the valve and the opposite end of which is adapted to be actuated by the windscreen or by the movable assembly of the thermostatic head and is therefore in abutment against the windscreen when the valve body, being stored provided with the latter, has its valve in the closed position; a stop ring is secured around the control needle approximately in the middle of the length thereof, to limit the amplitude of its sliding as will be explained below.
  • the guide and return device comprises, extending along the central axis of the seat, a cap screwed into the body and a cable gland screwed into the cap opposite the seat, drilled centrally right through to allow the valve stem and the needle to slide respectively;
  • the guidance and return device also comprises an O-ring seal placed in a housing hollowed out in the cable gland and deformed between the needle, around which it is threaded, the walls of this housing, and a cuvette cap also disposed in a housing of the larger cable gland and hollowed out in the face thereof which faces the seat;
  • the guide and return device also comprises a helical return spring extending in a chamber of the cap around the part of the valve stem which is housed in this chamber, a spring of which one end bears against the end wall of the chamber which is on the side of the seat and the opposite end of which bears against a flange of the valve stem produced in the vicinity of the end of the latter which is opposite the seat, the flange being interposed between this end of the return spring and
  • a thermostatic head adapted to cooperate with such a body also has a coaxial structure and comprises a main socket around which is screwed a graduated operating button serving it as a protective cover as well as a thermostatic element housed inside and whose tightening stroke determines the setting range of the thermostat;
  • the socket-actuator assembly further contains the movable assembly of the head, a fixed stop which is fixed to the socket, as well as removable stops also secured thereto and allowing, thanks to a system of slots distributed in the periphery of the socket and in which they can be selectively positioned, to delimit the range of adjustment of the thermostat; graduations carried by the periphery of the operating button allow the location of the latter to be located and thus the adjustment of the head;
  • the sleeve carries a nut connecting the thermostatic head to the valve body.
  • the thermostatic element comprises a piston projecting in the direction of the bore of the connecting nut, which is fitted into an end region of a pusher whose opposite end region houses an insert intended to bear against the free end of the needle of the valve body; a pivot is threaded around the end of the plunger opposite to the connecting nut, a return spring being supported between this pivot which it holds against a flange of the pusher and an opposite wall of the sleeve, namely an internal wall close to the end of the sleeve carrying the connection nut; an overtravel spring disposed concentrically inside the return spring also bears between the pivot, and another flange carried by the pusher on the side of the connecting nut.
  • the piston of the thermostatic element When the piston of the thermostatic element is stretched towards the connecting nut, it causes the pusher and its insert to push the needle of the body towards the seat against the force of the return spring, and when it is retracted, the springs act for the return of the pivot and the pusher, the length of the stroke to be accomplished by the piston before leading to the obturation of the seat for the valve being previously adjusted by rotation of the operating button in the limits set by the stops.
  • the invention aims to remedy the drawbacks mentioned above of thermostatic valves and also to create a complete thermostatic valve requiring no assembly on site, whose small volume allows better integration on a heating installation and thus better aesthetic, and also whose maintenance and troubleshooting can be ensured in a simple manner, in particular without having to drain the installation, essentially by means of a suitable tool.
  • the invention relates to a thermostatic valve of the valve type controlled by a thermostatic element in an assembly comprising a valve body, a socket screwed to the body, an operating button screwed to the socket, and an enveloping cover. at least a part of the operating button and of the thermostatic element, tap characterized in that the valve is fixed to an end part of a pusher housed in a chamber of the socket and secured to a member actuated by the thermostatic element, the valve, the pusher and the member actuated by the thermostatic element being slidably mounted relative to the sleeve under the action of the thermostatic element which is positioned in the operating button, and in that a return spring bears at one of its ends against the pusher and at the opposite end against the bottom of the socket chamber.
  • the result is a simple, robust and economical thermostatic valve structure, allowing, subject to the use of an appropriate tool, the replacement of a sub-assembly constituting a thermostatic "cartridge" without having to drain of the installation on which the valve is mounted.
  • the thermostatic valve shown in the drawing intended to equip a heating radiator, comprises a body on which an interchangeable thermostatic cartridge is mounted in the factory.
  • the body comprises a circular seat 10 having a central axis perpendicular to the longitudinal axis of the pipes between which the valve is intended to be inserted; a valve 11 belonging to the cartridge, adapted to selectively close the seat with a view to isolating or connecting an inlet chamber 12 and an outlet chamber 13 from the body, is actuated so as to be movable in translation along the central axis of the seat.
  • the valve 11 is carried by one end of a pusher 20 with the interposition of a stiffening washer 14 housed in the valve, this pusher being movable longitudinally along the central axis of the seat while being guided inside a sleeve 21 mounted coaxially and returned by a helical return spring 22 cooperating for this purpose with an overtravel spring 23 also helical, the pusher 20, the sleeve 21 and a pivot 24 as will be described below.
  • the sleeve 21, externally threaded over part of its length, is screwed into a threaded bore of the body extending around the central axis of the seat 10; the seal between the body and the socket 21 is ensured by means of an O-ring inserted and compressed between the body, the region of the end of the socket close to the seat produced in the form of an additional centering barrel smaller diameter than the threaded part of the sleeve, and a cup-plug 25 fitted around the centering barrel and pierced with a central hole for the passage of the pusher 20; the seal between the socket and the pusher is ensured by means of an O-ring inserted and compressed between the walls of a housing of the socket opening at the end of the centering barrel, the pusher 20, and the cup-cap 25.
  • the return spring 22 is under pressure between the bottom of this guide chamber 211 and a shoulder 201 created at the periphery of the pusher;
  • the overtravel spring 23 is under pressure between the bottom of a chamber 202 dug in the pusher from its end opposite to that carrying the valve, and the pivot 24 produced in the form of a ring whose periphery is threaded around the pusher 20; the pivot 24 is thus held by the overtravel spring 23 in abutment against a flange 203 that the pusher 20 has at its end opposite to the valve, and the central region of the pivot can thus be actuated by a thermostatic element 26, and more precisely by the piston 261 of this thermostatic element, pressing against it.
  • a brake ring 15 provided with stop lugs allowing if necessary its shearing, positioned on the body and extending the peripheral wall of the threaded bore thereof, is interposed between the body and the bush 21.
  • An operating button 27 to which a fixed stop 24 is fixed cooperates with the sleeve 21 by means of a screw thread serving on the one hand for its attachment to the sleeve and on the other hand for adjusting the thermostat; at least one stop 212 produced at the end of the outer wall of the sleeve 21 opposite its end close to the valve cooperates with the stop 28 to limit the adjustment stroke of the operating button, which also comprises, at its opposite end to that by which it is screwed around the sleeve, a bottom serving as a support for the thermostatic element 26 which is retained in the button 27 by clipping.
  • a cover 29 carrying graduations at least partially envelops the operating button 27 and more particularly the lateral periphery of the latter to which it is clipped, as well as the part of the periphery of the socket 21 which is not inserted in the button 27 , and most of the brake ring 15.
  • valve assembly can be carried out, manually or automatically, as follows:
  • sub-assembly A we assemble, to constitute a sub-assembly which will be designated hereinafter under the name of sub-assembly A, the pusher 20, the overtravel spring 23 which is introduced into the pusher 20, and the pivot 24.
  • the sub-assembly D is calibrated at a given temperature, for example at 21 ° C., by screwing the operating button 27 on the sleeve 21 so as to obtain a predetermined dimension between on the one hand the transition shoulder between the threaded part of the sleeve and its centering barrel, and on the other hand the zone of the valve 11 intended to bear against the seat.
  • the brake ring 15 is incorporated by positioning it on the body, when the latter is already assembled by means of a nut with a mounting sleeve on one of the pipes.
  • the cartridge is dressed by means of the cover 29 which is placed in the desired position, and it suffices to check the proper functioning of the tap, that is to say the passage of the valve. as desired from the isolation position to the position of communication between the inlet chamber and the body outlet chamber.
  • the cover must be turned 180 degrees to bring the marks to the corresponding position.
  • this continuously compares the temperature of the room to that predetermined by the user who has positioned the operating button on the mark corresponding to the chosen temperature.
  • the thermostatic element takes into account the temperature variations of the room and acts on the opening or closing of the valve by means of the pivot, the spring, and the pusher, which makes it possible to increase or reduce the water flow.
  • the overtravel spring absorbs the expansion of the thermostatic element.
  • the stop defines the regulation range.
  • the brake ring ensures the locking of the socket-body connection, and prevents unscrewing during the maneuver when opening the operating button with the cover. To separate this connection, it suffices to destroy the ring by shearing of the locking pins.
  • a suitable tool makes it possible to dismantle and replace the thermostatic cartridge without draining the installation.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Temperature-Responsive Valves (AREA)
EP19940401609 1993-07-30 1994-07-12 Thermostatventil Expired - Lifetime EP0636960B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9309441A FR2708703B1 (fr) 1993-07-30 1993-07-30 Robinet thermostatique.
FR9309441 1993-07-30

Publications (2)

Publication Number Publication Date
EP0636960A1 true EP0636960A1 (de) 1995-02-01
EP0636960B1 EP0636960B1 (de) 1997-03-19

Family

ID=9449822

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19940401609 Expired - Lifetime EP0636960B1 (de) 1993-07-30 1994-07-12 Thermostatventil

Country Status (4)

Country Link
EP (1) EP0636960B1 (de)
DE (1) DE69402131T2 (de)
ES (1) ES2101460T3 (de)
FR (1) FR2708703B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1120699A3 (de) * 2000-01-29 2002-06-12 Conecterm GmbH Thermostatventil
WO2004077189A1 (en) * 2003-02-25 2004-09-10 John Edward Lewthwaite Control valve
WO2005031216A1 (en) * 2003-09-29 2005-04-07 Giacomini S.P.A. Thermostatic valve assembly
WO2006080036A1 (en) * 2005-01-25 2006-08-03 I.V.A.R S.P.A. Device to control a fluid flow
CN102128281A (zh) * 2011-03-15 2011-07-20 王倩妮 数控智能节水龙头
CN103291975A (zh) * 2013-06-24 2013-09-11 北京菁华昱创节能设备有限公司 一种多功能恒温阀

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB991354A (en) * 1963-08-28 1965-05-05 Sulzer Bros London Ltd Flow regulating valves
DE2537033A1 (de) * 1975-08-20 1977-02-24 Oventrop Sohn Kg F W Insbesondere an ein heizkoerperventil anschliessbarer thermostat
FR2373006A1 (fr) * 1976-12-02 1978-06-30 Markaryds Metallarmatur Ab Dispositif pour soupape thermostatique
EP0002934A1 (de) * 1978-01-04 1979-07-11 Honeywell-Braukmann GmbH Thermostatventil
EP0136388A1 (de) * 1983-09-07 1985-04-10 Harry König Gehäuse für die Einbringung eines Thermostat-Ventileinsatzes
DE3834438C1 (en) * 1988-10-10 1989-09-07 Theodor Heimeier Metallwerk Kg, 4782 Erwitte, De Heating-system valve with a thermally influenceable regulating drive

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB991354A (en) * 1963-08-28 1965-05-05 Sulzer Bros London Ltd Flow regulating valves
DE2537033A1 (de) * 1975-08-20 1977-02-24 Oventrop Sohn Kg F W Insbesondere an ein heizkoerperventil anschliessbarer thermostat
FR2373006A1 (fr) * 1976-12-02 1978-06-30 Markaryds Metallarmatur Ab Dispositif pour soupape thermostatique
EP0002934A1 (de) * 1978-01-04 1979-07-11 Honeywell-Braukmann GmbH Thermostatventil
EP0136388A1 (de) * 1983-09-07 1985-04-10 Harry König Gehäuse für die Einbringung eines Thermostat-Ventileinsatzes
DE3834438C1 (en) * 1988-10-10 1989-09-07 Theodor Heimeier Metallwerk Kg, 4782 Erwitte, De Heating-system valve with a thermally influenceable regulating drive

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1120699A3 (de) * 2000-01-29 2002-06-12 Conecterm GmbH Thermostatventil
WO2004077189A1 (en) * 2003-02-25 2004-09-10 John Edward Lewthwaite Control valve
WO2005031216A1 (en) * 2003-09-29 2005-04-07 Giacomini S.P.A. Thermostatic valve assembly
WO2006080036A1 (en) * 2005-01-25 2006-08-03 I.V.A.R S.P.A. Device to control a fluid flow
CN102128281A (zh) * 2011-03-15 2011-07-20 王倩妮 数控智能节水龙头
CN103291975A (zh) * 2013-06-24 2013-09-11 北京菁华昱创节能设备有限公司 一种多功能恒温阀

Also Published As

Publication number Publication date
FR2708703A1 (fr) 1995-02-10
DE69402131D1 (de) 1997-04-24
ES2101460T3 (es) 1997-07-01
EP0636960B1 (de) 1997-03-19
DE69402131T2 (de) 1997-06-26
FR2708703B1 (fr) 1995-09-29

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